fixing multiomics wellness kp api x-bte annotation

[colleenXu]

• changing query method to POST, templating so that BTE can batch-query
• fixing reverse operations (not specified quite correctly)

Should make BTE faster at answering queries...

Also message Arpita in Multiomics team over her list of operations =/= this review's...

[colleenXu]

would also want to use this (no PR yet): https://github.com/biothings/bte_trapi_query_graph_handler/tree/wellness_batch_query